Smart Timer

Product Code: ME-8930


The ME-8930 Smart Timer works with all PASCO timing devices:

  • Accessory Photogate
  • Photogate/Pulley System
  • Time-of-Flight Accessory
  • Freefall Adapter
  • Laser Switch
  • G-M Tube


  • Works With 2 Photogates
  • More Than Just a Timer: Calculates speed and acceleration as well as measuring time.
  • Intuitive Operation: The menu-driven display mirrors the easy-to-follow flowchart on the Smart Timer label.
  • Quick Setup:Turn on the switch, plug in the photogates, and it’s ready to use.
  • Increased Timing Accuracy: The redesigned 3-section fence (2 included) uses more accurate method of measurement from leading edge to leading edge.
  • Portable or Plug-in:The battery-operated (4 AA cells) Smart Timer can be used anywhere. It can also be operated on the 9 V AC adapter (included).
  • Calculation Lock-out Switch: A switch inside the battery compartment disables the speed and acceleration modes. Timing modes are unaffected, and students are required to do their own calculations.

Typical Experiments

  • Acceleration Due to Gravity*
  • Newton’s Second Law*
  • Conservation of Momentum in Collisions*
  • Rotational Inertia of a Disk & Ring*
  • Acceleration Down an Incline
  • Simple Harmonic Oscillator
  • Oscillations on an Incline
  • Springs in Series and Parallel
  • Projectile Motion Using Photogates
  • Time-of-Flight and Initial Velocity
  • Determining the Acceleration Due to Gravity
  • Counting Radiation with the G-M Tube

What’s Included

  • 1x Smart Timer
  • 2x Picket Fences
  • 1x 9 VAC Adapter
  • 1x Lab Manual


Small parts. Not for children under 3 years.

Product Specifications

Resolution 100 μs
Accuracy 0.01% of full range of the measured time
Display 2-line, 16-character, alphanumeric LCD
Inputs Two 1/4” stereo phone jacks on side panel— TTL compatible
Power Requirements Four “AA” batteries (not included) or AC adapter (9 VDC, 500 mA) included

Recommended Accessories

Accessory Photogate ME-9204B
Picket Fences (Smart Timer) ME-8933
Freefall Adapter ME-9207B
Photogate & Pulley System ME-6838A
Time-of-Flight Accessory ME-6810A
G-M Tube/Power Supply SN-7927A
Phone Jack Extender Cable PI-8117

Support Documents

Manual Downloads

Product Manuals for the Smart Timer (ME-8930)

Smart Timer Manual (ME-8930)
(1.5 MB – .pdf – English)

The Smart Timer works with these PASCO devices:

Accessory Photogate

Featuring a Photogate Head with a narrow infrared beam and fast fall time that provide accurate signals for timing.

Photogate & Pulley System

Measure the motion of a pulley system using this combination photogate and low-friction pulley. For use with PASPORT and ScienceWorkshop Interfaces.

Time-of-Flight Accessory

Use with a Photogate to capture time of flght data. Timing starts when object passes through photogate and stops when object impacts this landing pad. For use with PASPORT and ScienceWorkshop Interfaces.

Freefall Adapter

This adapter is an auto release mechanism that works with Photogate Timers, Smart Timer, and ScienceWorkshop Interfaces.

Laser Switch

Acts as a large photogate for objects too large to pass through a standard photogate. Works with lasers as a light source.

G-M Tube/Power Supply

A Geiger-Muller probe that senses alpha, beta and gamma radiation.

Phone Jack Extender Cable

Extension cable can be used with any digital sensor.